Fix CI failure

[dmartinol]

• extracted common action to generate the version tag
• replaced + with _ in the action instead of using sed later

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.80%. Comparing base (6c2a83e) to head (ea59ce6).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2363   +/-   ##
=======================================
  Coverage   53.79%   53.80%           
=======================================
  Files         254      254           
  Lines       24509    24509           
=======================================
+ Hits        13185    13187    +2     
+ Misses      10040    10039    -1     
+ Partials     1284     1283    -1     

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[jhrozek]

I think the CI failures were unrelated and I just rescheduled them

[jhrozek]

The job is failing because it can't download the helm binary. I can reproduce the same issue locally:

wget https://get.helm.sh/helm-v3.18.4-linux-amd64.tar.gz
--2025-10-29 18:01:51--  https://get.helm.sh/helm-v3.18.4-linux-amd64.tar.gz
Resolving get.helm.sh (get.helm.sh)... 13.107.213.64, 13.107.246.64
Connecting to get.helm.sh (get.helm.sh)|13.107.213.64|:443...

[TomerFi]

The job is failing because it can't download the helm binary. I can reproduce the same issue locally:

Looks like there's a general issue accessing https://get.helm.sh.

helm/helm#31434

[dmartinol]

Note: I added a bunch of lint fixes probably due to a new version of golangci-lint
@jhrozek @JAORMX ^

[jhrozek]

LGTM!